York compressor removal - PeachParts Mercedes-Benz Forum

Rmcfarland · #1 07-22-2007, 10:48 PM

Well, the 240 is down for some vacuum work right now, and I thought I would give the A/C another look. I think my compressor is shot (it squeeks when running, clutch locked up and it ran dry for a long time. So, I went to remove the York, but to no avail. How on earth do you get that stupid thing out of the car? I got the two bolts on the bottom, and the two high bolts on the side. But, the two low bolts that are on the side of the compressor, kind of behind the thermostat housing,--how the crap do you get those off? If anyone could let me know I'd appreciate it. Also- Is there a quick test I can do to see if my compressor might have survived? Thanks in advance.

JimmyL · #2 07-22-2007, 10:52 PM

I can't remember exactly, but I do remember it was staggering what all had to be removed to get that compressor off. Seems like I pulled mine off attached to a large bracket that wrapped around front. Seems like exhaust/intake had to be either loosened or removed. It was most unpleasant, and this was on a bad engine sitting on a pallet. I can't imagine what it would be like in the car....

rs899 · #3 07-23-2007, 06:51 AM

I can't tell you how to remove it exactly, but if and when you do remove it, you might consider preemptively replacing your water pump. That's a bear with the compressor and bracket in place, and probably a lot better with the compressor out of the way.

Stevo · #4 07-23-2007, 11:20 AM

I have removed a couple of those suckers but cant remember exactly where the bolts are, you just have too follow the bracket around, the next one will be easy

Rmcfarland · #5 07-23-2007, 01:33 PM

Well, I bit the bullet and just ordered a new compressor, dryer, expansion valve and O-rings. Will have fun with this one, it sounds like.

Rmcfarland · #6 07-27-2007, 05:57 PM

Alright! I got the compressor off today. I don't have all the new A/C parts yet so I can't install everything just yet. And yes, that compressor is a royal pain to get off. The two bolts on the top side are easy, as are the two on the bottom of the compressor. But on the side of the compressor, at the bottom, are two bolts that are horrendous to remove. I used a straight wrench and attacked them from the top and had to rock the compressor around alot to get them. Royal pain and I spent probably 2 hours out there. Hope this works... will keep updating.

Rmcfarland · #7 07-28-2007, 03:19 PM

So, I went to work on my seized A/C clutch. Coil and plate both move fine but the bearing was locked up. I got a new bearing, part # 25204 from O'reilly and it is the wrong size. But, it says it is for the york compressor. Anybody know where I can get this bearing? The only data I have for it is 6206v stamped on the bearing cover. I really really want my A/C now!

Rmcfarland · #8 07-28-2007, 10:12 PM

FYI-- I found the correct bearing at NAPA auto parts. Part number is 6206-2RSJ, for those who need it. Cost was ~24 dollars.

Anyway, I now have a couple new problems *sigh*

The new compressor: Should I be able to turn it by hand? I can turn the old one but not this new one. Is there some valve that is holding pressure or something? or is it seized? This is a remanufactured York compressor.

And, the old clutch didn't want to cooperate with the new compressor. Seems the bolts around the shaft are bigger, and contact the pulley when the clutch is tightened on. I put a spacer inbetween the shaft and the clutch, seems like that will work. Anybody else been here?

Rmcfarland · #9 07-30-2007, 06:39 PM

Just thought I would write and say that everything is done!!

I replaced the exp. valve, drier, and all the O-rings in the system. I put my remanufactured York in, and filled it with Ester 100 oil. I put about 8 oz of oil in the system total, maybe a little more.

I then drew a vacuum on the system with a little cheapie Harbor Freight air compressor vacuum. Worked pretty well, down to about 26 inches. Good enough for me.

After letting it sit on vacuum for a while, maybe 30 minutes, I started putting R-134 in, while jumping the clutch together. I put the leads back on the pressure switch after the first can and it held on after that. I put in 3 12 ounce cans total, for 36 oz of freon. The 240D system holds 41.6 ounces by the book, I believe, so this is 87% of the original R-12 capacity. Sound about right?

Anyway, the whole thing seems to work pretty good. Not a professional job, but it didn't cost me an arm, leg, and left kidney either. I wouldn't mind if it got colder at the vents, any suggestions?

Thanks to all who help on this forum. I would have not even attempted this job without you all. This site really makes it possible to own one of these old Mercedes.

Mister Byrnzoil · #10 07-30-2007, 08:03 PM

thanks much for the play by play, especially the follow up. This job is lurking in my future... For the record, I'm still dreading it, but much less so now.

Mojool · #11 07-30-2007, 10:42 PM

did you flush the system at any stage? if so, what did you use? i'm trying to decide what to use.

Rmcfarland · #12 07-31-2007, 02:52 AM

Oh, for flushing, I didn't use an agent. I blew lots of compressed air through each part of the A/C system (except the new drier and compressor). My system did not have a compressor sieze up on it or anything though, if you have had a failure other than a simple leak it is probably necessary. All my lines looked clean on the inside. Actually, you probably should flush regardless.

Just rode home in cool comfort tonight.

I really thought it would slow down my 240 more than it does. That big York really isn't rough or noisy at all, I heard some people saying stuff like that about it, but IMHO it is quieter than the ones on most modern cars.

Does anyone have advice one way or another about the amount of freon I used?

Mojool · #13 08-01-2007, 10:19 AM

cool. i keep seeing the flushing agents in a bottle (not in pressurized can) and wonder how one gets that stuff into the lines. ok, sure you could pour it into some of them i suppose, but then how do you clean out the evaporator since it's above the expansion valve, etc...

http://cgi.ebay.com/ebaymotors/Air-Conditioning-FLUSH-A-C-FLUSH-AUTO-A-C-1-Quart_W0QQcmdZViewItemQQcategoryZ63700QQihZ005QQitemZ150122689066QQrdZ1QQsspagenameZWD1V